clk: msm: Add clk_set_duty_cycle API declaration

Add missing declaration of clk_set_duty_cycle API
to the clk header file.

Change-Id: I49625c8a4117757e35688f9e4d645d7708a0ee46
Signed-off-by: Shilpa Suresh <sbsure@codeaurora.org>
diff --git a/include/linux/clk/msm-clk.h b/include/linux/clk/msm-clk.h
index baa8e52..f442538 100644
--- a/include/linux/clk/msm-clk.h
+++ b/include/linux/clk/msm-clk.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2009, 2012-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2009, 2012-2017, 2020, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -55,6 +55,11 @@
 /* Set clock-specific configuration parameters */
 int clk_set_flags(struct clk *clk, unsigned long flags);
 
+/* Set clock duty-cycle as a ratio of numerator/denominator for the desired
+ * duty cycle
+ */
+int clk_set_duty_cycle(struct clk *clk, u32 numerator, u32 denominator);
+
 /* returns the mux selection index associated with a particular parent */
 int parent_to_src_sel(struct clk_src *parents, int num_parents, struct clk *p);